Improvement in paper-machines



J. BACON. Paper-Machine.

No. 197,004. Patented Nov. 13, 1877'.

UNITED S'm'rns PATENT OFFICE,

7 JOHN BACON, OF ST. J OHNSBURY, VERMONT.

IMPROVEMENT IN PAPER-MACHINES.

Specification forming part of Letters Patent N 0. 197,004, datedNovember 13, 1877; application filed September 6, 1877.

To all whom it may concern:

Be it known that I, JOHN BACON, of St Johnsbury, in the county ofCaledonia and State of Vermont, have invented a certain;

new and useful Improvement in Paper-Machines, of which the following isa description sufficiently full, clear, and exact to enable any personskilled in the art or science to which my invention appertains to makeand use the same, reference being had to the accompanyin g drawing,forming a part of this specification, in which- Figure 1 is aperspective view, showing the machine; and Fig. 2 is a sectional sideelevation.

Like letters of reference indicate corresponding parts in the differentfigures of the draw- 111 g.

My invention relates more particularly to that class of paper-makingmachines used in the manufacture of leather-board, straw-board,

wood-pulp board, and the like; and consists in a novel appliance to beattached to the machine for the purpose of smoothing down the marks inthe paper or board, whether caused by the pressure of said paper orboard between the cylinders and the felt or otherwise.

The nature and operation of my invention will be readily understood byall conversant with such matters from the following description..

In the drawing, A represents the felt on which the pulp is carried; Band D, the cylinders between which the pulp is pressed; B, the cylinderon which the paper or board is formed; 0, the cylinder or roller usedfor smoothing down the felt-mark.

When the machine is in operation the pulp is carried along on the felt Aup and overthe roller E, thence between the cylinders B and D, where itis pressed into sheets or continu ous roll-paper or board.

It is well known that in passing between the cylinders it is carried onthe felt A, which also of necessity passes between the cylinders B andD. The pressure to which the pulp is subjected causes the impress of thefelt to be made upon it in greater or less degree, according to thetexture of the fabric and the pressure exerted.

The object of my invention is to smooth down the marks made by the felt,aid the main cylinders in pressing out moisture, and give a more uniformthickness to the board.

Having thus set forth my invention, what I claim is- The roller orcylinder 0, adjusted to the cylinder B, substantially as and for thepurpose described.

JOHN BACON.

Witnesses:

GEO. MAY, E. M. BoLEs.

